Participating clinics/institutions/physicians

Denmark	Copenhagen	Kjeld Schmiegelow, Karsten Nysom, Astrid Sehested, Marianne Ifversen, Lisa Hjalgrim, Jesper Brok, Rene Mathiasen, Bodil Als-Nielsen, Marianne Hoffmann, Mimi Kjærsgaard, Ruta Tuckuviene, Christine Dahl, Tenna Ruest Haarmark Nielsen, Sascha Wiik Michelsen, Raheel Altaf Raja, Peter Erik Lotko Pontoppidan
	Odense	Peder Skov Wehner, Eckhard Schomerus, Niels Fisker, Michael Callesen, Mathias Rathe, Dorthe Grosen, Sine Lykkedegn
	Aarhus	Henrik Hasle, Birgitte Klug Albertsen, Torben Mikkelsen, Pernille Edslev Wendtland, Karin Bækgaard Nissen, Ines Kristenen, Torjus Skajaa, Louise Lindholdt Hansen, Louise Tram Henriksen, Karen Schow Jensen, Katja von Hoff
	Aalborg	Steen Rosthøj, Christina Friis Jensen, Marianne Olsen
Estonia	Tallinn	Kristi Lepik, Kadri Saks, Maarja Karu, Geerda Ainsoo, Irina Kerna, Keiu Paapsi, Kati Mädo
	Tartu	Sirje Mikkel, Lenne-Triin Kõrgvee, Ain Kaare, Pille Tammur
Finland	Helsinki	Samppa Ryhänen, Mervi Taskinen, Kim Vettenranta, Pasi Huttunen, Jukka Kanerva, Kirsi Jahnukainen, Virve Pentikäinen, Helena Olkinuora, Satu Långström, Pauliina Utriainen, Matti Parry, Anu Suominen, Minna Koskenvuo, Adam Alexandersson, Anu Suominen, Antti Kyrönlahti, Heljä Lång
	Turku	Minna Koskenvuo, Päivi Lähteenmäki, Marika Grönroos, Anu Huurre, Laura Korhonen, Linnea Schuez-Havupalo, Liisa Järvelä, Riikka Kuvaja
	Oulo	Riitta Niinimäki, Hanna Juntti, Anne Hekkala, Elli-Maija Ukonmaanaho, Henri Aarnivala
	Tampere	Olli Lohi, Susanna Vuorenoja, Päivi Raittinen, Sauli Palmu, Niina Valtanen, Kristiina Nordfors
	Kuopio	Kaisa Vepsäläinen, Jouni Pesola, Tuuli Pöyhönen, Stefan Becker, Emmi Danner
Iceland	Reykjavik	Ólafur G. Jónsson, Halldóra K. Thórarinsdóttir,
Iceland	Reykjavik	Sólveig Hafsteinsdóttir, Ragnar Bjarnason, Jón Jóhannes Jónsson, Gauti Rafn Vilbergsson
Latvia	Riga	Anna Valaine, Zanna Kovalova, Santa Kursite, Marika Grutupa, Elizabete Cebura, Zelma Visnevska-Preciniece, Gunita Medne, Irina Voitovica, Iveta Racko, Liene Smane
Lithuania	Kaunas	Giedre Rutkauskiene, Rosita Kiudeliene, Egle Ramanauskiene, Sonata Argustaite, Justina Klimaite, Ruta Maske, Eglė Bindokaitė, Mantas Simutis
	Vilnius	Jelena Rascon, Goda Vaitkevičienė, Gražina Kleinotienė, Audronė Mulevičienė, Indrė Tamulienė, Ramunė Pasaulienė, Rolanda Nemanienė, Sigita Stankevičienė, Sonata Šaulytė Trakymienė, Vilma Rutkauskaitė, Ignė Kairienė, Monika Kapitančiukė
Norway	Oslo	Anne Grete Bechensteen, Ellen Ruud, Heidi Glosli, Bernward Zeller, Inga Maria Johannsdottir, Einar Stensvold,
Norway	Oslo	Jochen Büchner, Monica Cheng Munthe-Kaas, Aina Ulvmoen, Charlotte Alme, Marta Burman, Kirsten Jarvis, Ida Knapstad, Tale Torjussen, Christina Elisabeth Bjerring Opheim, Anne Gro Wesenberg Rognlien, Ingvild Heier, Anne Vestli
	Trondheim	Bendik Lund, Ann Elisabeth Åsberg, Magnus Aassved Hjort, Charlotte Olsen, Maria Dønnem
	Bergen	Maria W Gunnes, Dorota Malgorzata Wojcik, Anita Andrejeva, Ingrid Kristin Torsvik, Christian M Thaulow, Anna Partheil, Szymon Klafkowski
	Tromsø	Tore Stokland, Trond Flaegstad, Niklas Stabell, Tove Nystad, Simon Kranz, Ole Mikal Wormdal
Sweden	Stockholm, Solna	Pernilla Grillner, Trausti Oskarsson, Anna Nilsson, Cecilia Petersen, Mats Heyman, Stefan Söderhäll, Niklas Pal, Klas Blomgren, Stefan Holm, Johan Malmros, Per Kogner, Jonas Karlén, Jan-Inge Henter, Petter Svenberg, Karin Belander Strålin, Tatiana Greenwood, Fredrik Bäcklund, Susanna Ranta, Tony Frisk, Tomas Bexelius, Christina Egnell, Johan Hamrin, Nina Mogensen, Mari Wilhelmsson, Clary Georgantzi, Karin Henning, Lena-Maria Carlson, Lovisa Malmqvist, Hans Henningsson, Nikolas Herold, Linnea Ek, Diana Treis, Erik Larsson
Sweden	Stoclholm, Huddinge	Peter Priftakis, Petra Byström, Marie Meeths, Mikael Sundin, Hanna Tilander, Jacek Toporski, Gauti Rafn Vilbergsson, Jacek Winiarski
	Lund	Kees-Jan Pronk, Anders Castor, Lars Hjorth, Helena Mörse, Dominik Turkiewicz, Ingrid Öra, Ulf Tedgård, Annika Mårtensson, Marie Eliasson Hofvander, Johan Svahn, Patrik Romerius, Joakim Wille, Ladislav Krol, Joana Makari, Nadine Gretenkort Andersson, Anna Sällfors Holmqvist, Charlotte Ragnarsson, Gustav Andersson Sundén, Karin Wiebe, Anders Valind, Rikke Thofte
	Uppsala	Josefine Palle, Britt-Marie Frost, Gustaf Ljungman, Johan Arvidson, Per Frisk, Anders Öberg, Annika Englund, Natalja Jackmann, Britt Gustafsson, Tania Christoforaki, Arja Harila-Saari, Mia Giertz, Gustaf Leijonhufvud, Geraldine Giraud, Susan Pfeifer, Alina Aras, Henriina Hermansson, Kim Ramme, Cataring Träger
	Gothenburg	Thorsteinn Gunnarsson, Karin Mellgren, Jonas Abrahamsson, Gustaf Österlundh, Marianne Jarfelt, Magnus Sabel, Magnus Göransson, Cecilia Langenskiöld, Lene Karlsson, Elizabeth Schepke, Lars Kawan, Torben Ek, Cecilia Petersen, Diana Ljung-Sass, Lisa Mellström, Aron Onerup, Martin Dalin, Jerker Isaksson, Monika Renkielska, Jonathan Källström
	Umeå	Frans Nilsson, Ulrika Norén Nyström, Per-Erik Sandström, Caroline Björklund, Magnus Borssén, Fredrik Bäckström
	Linköping	Lisa Törnudd, Mikael Behrendtz, Per Nyman, Hartmut Vogt, Hagen Graf von Einseidel, Viktor Säll, Britt-Marie Holmqvist
The Leukemia Registry		Mats Heyman
		Karolinska Institutet
		Dept. of Women’s and Children’s Health Childhood Cancer Research Unit Tomtebodavägen 18 A
		SE-17177 Stockholm
		Sweden